Qt添加信号槽

#include "exp.h"
#include<QString>

exp::exp(QWidget *parent, Qt::WFlags flags)
	: QMainWindow(parent, flags)
{
	ui.setupUi(this);
	connect(ui.pushButton,SIGNAL(clicked()),this,SLOT(on_pushButton_clicked()));
}

　　当然还需要在.h里声明信号。